I see that most people have disabled Accelerometer on the flight controller. 

The question I have is when doing disabling those then you can only fly in rate mode right... but how dose it help the FC or what's the point of disabling ACC?

Yes, you can only fly in rate mode if you turn ACC off.

You have to do it on any F1 flight controller to open up space in the processor so you can run lower looptimes lower than 1000.

It increases the speed that the processor can run. 1000 looptime is the lowest it can run without disabling acc. You are correct, it can only fly in acro when you do this.

hi
like to know if your have to chance the looptime also in LCI
ore only

eerst dump  Enter
set acc_hardware = 0
dan save    Enter

after this input

i say in cli stil 2000 looptime

(13-Apr-2016, 12:08 AM)SonicCopter Wrote: Yes, you can only fly in rate mode if you turn ACC off.

You have to do it on any F1 flight controller to open up space in the processor so you can run lower looptimes lower than 1000.

It increases the speed that the processor can run. 1000 looptime is the lowest it can run without disabling acc. You are correct, it can only fly in acro when you do this.

Probably just bad wording - it doesn't increase the processor speed. It just frees some computing power and since guys flying acro exclusively don't use the acc at all it is just wasted "resource" that can go elsewhere - to get higher looptimes in most cases.

plus if you ever get stuck in a tree you'll be able to rearm your quad and try to spin the props to get out.

(20-Nov-2016, 01:29 AM)JimmyLe813 Wrote: plus if you ever get stuck in a tree you'll be able to rearm your quad and try to spin the props to get out.

No one here better qualified to make that statement then Jimmy!!

Even if you have enough cpu power, disabling acc can lead to a more constant looptime. Afaik in betaflight acc rate is slow but still math-intensive, it can bring hiccups when running fast looptimes.

first / dump / Enter
set acc_hardware = 0
than save / Enter

so the looptime in LCI wil be lower than 2000
on a naze 32
ore just fly and have fun

(22-Nov-2016, 06:08 PM)solots Wrote: first / dump / Enter
set acc_hardware = 0
than save  /  Enter

so the looptime in LCI wil be lower than 2000
on a naze 32
ore just fly and have fun

You don't need to do that on betaflight - if you set lower looptime in configuration tab, additional hardware will be disabled automatically

Sorry if I am reviving this post from the dead!

Does it make sense still disabling the accelerometer in an F4 board if one flies only in acro?

(11-Jul-2019, 10:32 AM)brnmd Wrote: Sorry if I am reviving this post from the dead!

Does it make sense still disabling the accelerometer in an F4 board if one flies only in acro?

It's probably not worth it. I can't remember my CPU usage off the top of my head but now Betaflight have ditched the higher looptimes I don't know if it's even possible to peg the CPU on F4.

Maybe if you're mining cryptocurrency while flying. Or running that silly Redcat stuff.

(11-Jul-2019, 10:36 AM)Banelle Wrote: It's probably not worth it. I can't remember my CPU usage off the top of my head but now Betaflight have ditched the higher looptimes I don't know if it's even possible to peg the CPU on F4.

Maybe if you're mining cryptocurrency while flying. Or running that silly Redcat stuff.

I saw a decrease of 7% on the Mamba Mini FC on CPU load just by disabling this, bear in mind that I have softserial and telemetry on.
Is there a what to show current CPU load mid flight on the OSD? Haven't even looked yet though.

Unless your CPU load is over 50% you don't even need to worry about it.

I leave the accelerometer switched on because after a firmware update or after I've changed some settings I use it to do a hover test in angle mode in my back garden which is a really confined space so acro mode is a no go. After a crash I also like to do a quick LOS flight in angle mode to check that everything still works.

In addition to this I'm running 8K/8K loops plus I also have SoftSerial switched on and my CPU load only peaks at 12%.

As already said, an F4 board has plenty of grunt to run everything, and even more so with an F7 board.

Keep in mind that if you are trying some experimental features like bidirectional dshot/RPM filtering, your CPU load may jump above 50% on F4 boards.

I always keep accelerometer because I always have angle mode setup. One, to do what Snow does. But angle mode is a saving grace. If you ever loose your FPV feed, switching to angle can save your quad from serious damage.